Sony XPERIA XZ1 is perfect smartphone from Sony Mobile. It has amazing display, powerfull Qualcomm Snapdagon 835 CPU and also lot of operating memory. It has also perfect camera and water resistance construction. In this article i will show you how to update your device to the latest version of Android 8.0.0 Oreo and latest official firmware.

First of all one important thing - before you start to do anything with your phone, do the backup of your personal data. It is only for your safety in case that something goes wrong or any mistake happens. In that case you can use the backup to restore the data and try to do everything once again. Each tutorial has been done many times to verify its propriety, so just read carefully all instructions and continue step by step. For each of Sony XPERIA smartphones we will provide a manual consisting of few „HOW TO“ chapters. Our tutorials will be of course updated every time when Sony Mobile publishes anything new, affecting any of our topics. The major part of every file has been created by myself and every file has been tested on the corresponding phone. All referenced files are determined for Sony XPERIA XZ1 G8342. So, what can you expect in terms of mentioned manuals / tutorials?

It is following guideline showing HOW TO:
1. install the newest generic Android 8.0.0 (for Sony XPERIA XZ1 G8341 it is 47.1.A.8.49 firmware)

1. how to install the newest generic Android 8.0.0 Oreo for Sony XPERIA XZ1
a) first of all, check your firmware version (if you already have the newest one, you do not need this tutorial)
b) download latest Android 8.0.0 Oreo (mirror) for Sony XPERIA XZ1
c) unpack downloaded firmware
d) if you are flashing your phone first time, install drivers for Flashtool
e) note, that app need atleast 10 GB free space on yout hard drive for flashing, also make backup of your data in phone, they will be erase (you can remove userdata.sin from firmware files and han you data will stay in phone, but it is not recommended) 
f) turn off your phone, connect phone to PC with holding volume down button and than start newflasher.exe (select N twice, when program ask you to things about TA)
g) after few minutes all is done and your phone gets the new firmware and you can start it
h) if you need specific firmware customization, you can use XPERIA Service